The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Johnston Frank B

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications. FAA spelling: Johnston Frank B.

Approved modifications 2 · newest first

1989-12-15SA3565SW · Modification of torque tube assembly. · AA-1, AA-1A, AA-1B
1989-12-15SA3564SW · Modification of torque tube assembly. · AA-5, AA-5A, AA-5B

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.